Capsule stopper for bottles



April 23, 1940. G. F. M. PEDERSEN 21,433

CAPSULE STOPPBR FOR BOTTLES, JA RS, GLASSES, AND THE LIKE v OriginalFiled Sept. 29, 1957 in van for:

B WQK.

attorney:

UNITED STATES PATENT orricr.

CAPSULE STOPPER FOB. BbTTLES, JARS; GLASSES, AND THE LIKE GunnerFrederik Marinus Pedersen, Copenhagen, Denmark, assignor to DanskCrown-Cork Fabrik ved Aage Weybye-Lassen, Copenhagen, Denmark OriginalNo. 2,133,565, dated October 18, 1938,

Serial No. 166,310, September 29, 1937. Application for reissueSeptember 9, 1939, Serial No. 294,153. In Denmark October 7, 1936 6Claims.

The ordinarily known bottle closures often called crown corks or crimpedcaps, for bottles and the like have fitted in the bottom of the cap asealing disc of cork, pasteboard or the like and, on the outside of thelatter, most frequently a disc of some substance or other that is notaffected by the liquid contained in the bottle. This latter disc issmaller than the former one, which is referred to in the following asthe cork disc and it has therefore to be centered relatively to the corkdisk andis then suitably cemented thereto. Here the difficulty arisesthat on the one hand it is difilcult to secure for the inner disc orblank an absolutecentering and, on the other hand, it is a fact that thebottle will leak, if the blank is not properly centered.

It is also known to provide the cork disc with a circular slit, and tobend the edges of the same back, so that the slit will gape, after whichthe bent-down flange of a blank is pressed into the slit, and the discis then flattened and can now be inserted into the cap itself.

This process requires quite a number of diflerent operations and istherefore expensive and complicated.

The present invention has for its object toremove this drawback, in thatthe blank is given an absolutely accurate centering, and does not needto be cemented to the cork disc. The invention consists therefore inthat the blank, without the edges being bent, is pressed into apermanent depression in the cork disc by means of a self-centeringpiston with a projecting circular edge.

will gradually penetrate down into the cork, and thereby the tighteningpower of the cap will be reduced, while on the contrary by the presentinvention, the blank is pressed into the cork before the cap is applied,so that the blank and I the cork are in the same plane, and the-cap willbottle and cap with the latter in position thereu on, and

Figure 3 is an enlarged cross-sectional view of thecap.

The reference character I designates a selfcentering chuck keeping thecap in position, 2

the cap, 3 the cork disc and l the blank which by means of the cuttingedge 1 of the tubular piston 5,1s pressed down into the cork disc 3, andgives the same a permanent depression shaped like a truncated cone,after which the inner piston 5 presses the blank down into thedepression shaped like a truncated cone in such a manner that the edgeof the blank will be held therein. As shown more clearly in Figure 3,the wall I! of the truncated cone overlies the marginal edge of theblank 4 and said inclined wall 8 acts 3 to retain the blank 4 in thedepression in the disc 3, this construction eliminating the bending ofthe edge of the blank 4 to term a flange for interlocking engagementwith the cork disc.

By the downward motion of the piston, the Having nOW described yinvention What, I 3 cork disc will receive a permanent deformation,claim as new and desire to ur by ette s P tand thereby the outer edge ofthe depression will cut is: become somewhat sloping, i. e. similar to atrun- 1. In a closure for bottles, a crimped cap, a

, cated cone, and will thereby maintain the blank sealing disc in thecap, said disc having a subin position, while the central part of thecork stantially flat peripheral surface, and also hav- 4 disc willbecome convex. when a metal cap with ing a permanent depression thereinbordered by such a combined cork disc and blank is attached, inwardlyinclined side walls in simulation. of a in known manner, to a bottle orsome other retruncated cone, said side walls being so posiceptacle theblank will rest accurately over the tioned that they are adapted to beflexed inmouth of the bottle neck, and by the pressure wardly byengagement by the neck of a bottle 4 the cork disc will be pressedsomewhat inwardly over the edge of the blank, and'will prevent anyliquid from penetrating behind the same.

It should further be noted that in all known caps fitted with foil,spot, Cellophane" (registered trade-mark) or the like, the blank restson the cork disc itself in such a manner that the plane of the blank isoutside the surface of the annular ring 01 the cork disc. Theconsequence is that when the cap is applied to a bottle, the blank withwhich'said cap may be used, and a bottle neck engaging disc in thedepression with the edges of the side walls of the depression at theexposed side of the sealing disc overlying the marginal edge of thebottle neck-engaging disc and with said inclined walls retaining thedisc in assembled relation and whereby the inclined side walls of thedepression are adapted to overlie the marginal edge of the bottleneck-engaging disc when the cap is secured to a bottle.

2. In a closure for bottles, a crimped cap, a sealing disc in the cap, adepression in the disc having inclined side walls in simulation of atruncated cone and a bottle neck engaging disc in the depression withthe edges of the side walls of the depression at the exposed side of thesealing disc overlying the marginal edge of the bottle neck engagingdisc and with said inclined walls retaining the disc in assembledrelation, the bottom wall of the depression being of convex formationand the bottle neck-engaging disc being of a concavo-convex formationfor intimate contact with said bottom wall and the marginal edges of thesame being spaced from the exposed face of the sealing disc.

3. A method of forming a closure for bottles comprising centrallypositioning a flat circular blank on a flat circular sealing discdisposed in a cap, pressably cutting into said circular sealing disc atthe edges of said circular blank and simultaneously forcing saidblank'into the sealing disc to permanently deform said sealing disc andproduce a permanent circular depression therein and dispose the edge ofsaid blank in said permanent depression, and thereafter pressing saidblank in the said depression in such a manner that the edge of the blankwill be held therein.

4. In a closure for bottles and the like, a crimped cap, a-sealing discin the cap having an exposed surface, a permanent depression in thesealing disc formed by depressing the material thereof to permanentlydeform the same at least at the periphery of the depression, theperiphery of the depression having an inwardly inclined side wall, and abottle neck engaging disc having its edges pressed into the depressionwhereby the edges of the side walls of the depression in the sealingdisc overlie the marginal edge of the bottle neckging disc annd retainthe disc in assembled relation.

5. In aclosure for bottles and the like a crimped cap, a sealing disc inthe cap having an exposed surface, a permanent circular depression inthe sealing disc with a bottom wall of a generally convex formationformed by depressing the material thereof to permanently deform the sameat least at the periphery of the depression, the periphery of thedepression having an inwardly inclined side wall, and a bottle neckengaging disc having its edges pressed into the depression; the bottleneck engaging disc conforming generally to the shape of the depressionwhereby the edges of the side walls of the depression in the sealingdisc overlie the marginal edge of the bottle neck-engaging disc andretain the disc in assembled relation.

6. A sealing disc to be used with a cap to form a closure for bottlesand the like having a de- GUNNER FREDERIK MARINUS PEDERSEN.

